"My 6yo Santaskepticwas told to write a letter to Santa at school. So he did..." McCammon said.

In the boy's letter to Santa, saying he is "only doing this for the class", before telling the big man "your life is empty" and that he doesn't know the trouble he is going through.

The letter reads:

"Dear Santa, "Santa I'm only doing this for the class. I know your naughty list is empty. "And your good list is empty. And your life is empty. "You don't know the troubles I've had in my life. "Good-bye, (I'm not telling you my name)."

Photo / Twitter

The boy's mum was quick to provide some clarification, writing: "PS - the 'troubles' in his life? His brother. Don't call child services."

McCammon's tweet has been shared more than 8400 times and received more than 22,000 reactions.

It's highly likely the boy's name has now been added to Santa's list of naughty children.

This article was first published on NZ Herald and is republished here with permission.